TREA

Norio Masuda

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  • Yamagata, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Lapping tools
    • Patent number 5,041,173
    • Issue date Aug 20, 1991
    • Kabushiki Kaisha Toshiba
    • Toshio Shikata
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Grant

    Lapping tools and method of manufacturing the same
    • Patent number 4,867,803
    • Issue date Sep 19, 1989
    • Kabushiki Kaisha Toshiba
    • Toshio Shikata
    • B22 - CASTING POWDER METALLURGY